Tanning-drum.



B. ALLEN, JR;

TANNING DRUM.

APPLICATION FILED ocns. 191a.

Patented Oct. 5-, 1915.

3 SHEETSSHEET I.

B. ALLEN, JR;

TANNING DRUM.

ION

APPL 191.3, 1,155,866. Patented Oct. 5, 1915. I 3 EEEE TS EEEEE 3.

prrrran s'rATEs PATENT 0mm.

BONA ALLEN, JR-., OF BUFORD, GEORGIA.

TANNING-DRUM.

Application filed October 6, 1913. Serial N 0. 793,705.

To all whom it may concern:

Be it known that I, BONA ALLEN,Jr., a a citizen of the United States, residing at Buford, in the county of Gwinnettand State of Georgia, have invented certain new and use ful Improvements in Tanning-Drums; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

The present invention relates to drums for tanning leather, and has for its purpose to provide a tanning drum wherein the several parts thereof are assembled in a manner which will afford a rigid and substantial structure capable of constant and excessive wear, and one in which the several parts may be readily assembled and disassembled, if desired.

With these and other objects in view the invention consists in the novel details of construction and combinations of parts more fully hereinafter disclosed and par ticularly pointed out in the claim.

Referring to the accompanying drawings forming a part of this specification in which like numerals designate like parts in all the views: Figure 1 is a side elevational View of the tanning drum. Fig. 2 is an end elevational view of the same. Fig. 8 is a longitudinal sectional view of the drum taken at one end.

Referring to the construction in further detail, the drum consists of a plurality of closely assembled and annularly arranged staves 1 closed at either end by a head2, one being shown in Fig. 8. Each of said heads comprises a panel formed of two sections comprising a plurality of closely assembled planks 3, and a sheet of tarred cloth 5 is interposed between the two sections to provide a liquid tight joint therebetween, as will be understood. The head fits within an annular groove 6 formed on the inner periphery of the cylindrical body and adja cent the end thereof, as clearly shown in Fig. 3. The head is reinforced by a plurality of radially disposed beams or bars 7, which are suitably secured to the head through the medium of bolts 8 at their outer ends, and between which are provided segmental members or strips 9 forming a close fit against the inner peripheral edge of the staves 1, and secured by bolts 10.

The drum is provided at either end with Specification of Letters Patent.

" Patented Oct. 5, 1915.

trunnion 11 formed integral with a plate 'g or eastlng 12 having reinforcing webs 13. 1 he trunn1on 11 1s secured to the drum head 2 by a pair of concentric rings 14 and 15 and a plurallty of bolts 16 passing through said rings, the plate 12, and the inner ends of the bars or beams 7. Said members 7 have reduced end portions fitting between the webs 13 of the trunnion casting, as clearly shown in Fig. 2., A plurality of rings secure the staves 1 to the end heads 2 and comprise each three rods 16 that are connected together by coupling members 17, through which said ring sections pass and are secured by nuts 18 The nuts 18' are screw-threaded on the ends of the rods, and by reason of which the several rods of each ring may be adjusted for obvious reasons. 3

At a suitable point the drum is cut away to provide an opening around which is secured the door frame 17 to receive a door. The door is constructed of a plurality of planks 21 connected together by cross pieces 24, the opposite ends. of which are provided with slots 25 to receive bolts 26. The bolts 26 are provided with handles 80 threaded thereon and adapted for securing the door in closed position.

A metal ring or band 31 surrounds the drum at one end and is formed with webbed flanges 32 to receive bolts 33 for securing said ring to the drum. The ring is adapted for engaging with a suitable frictional driv-' ing pulley to rotate the drum for the tanning operation in a known manner. A plurality of studs or pins 34 are secured to the staves of the drum and project inwardly,

and have for their purpose to agitate the material being treated while the drum is rotating.

It is obvious that those skilled in the art mayvary the details of construction and ar rangement of parts without departing from the spirit of my invention, and therefore I do not wish to be limited to such featureseXcept as may be required by the claim.

I claim:

A tanning drum of the character described comprising heads constructed each of a pair of panels built up of a plurality of closely assembled planks, a sheet of tarred cloth clamped between said panels, a plurality of staves assembled in cylindrical formation to constitute the drum body and provided with sockets adjacent their ends for receiving the drum head, hoops for clamping said staves about said heads, a casting fitted to each of said heads and comprising a base plate, Webs formed on said base plate and dividing the same to provide a plurality of radially arranged tapering sockets, bars formed with tapered inner ends fitted in said sockets and having their outer ends engaging the staves, a pair of rings of different diameters fitted to the interior faces of each of said drums, circular series of bolts passing through said rings and bars for holding the parts together, segmental members arranged between the outer ends of said bars, and bolts passing through the outer ends of said bars and said segmental members for securing the same to the drum heads, substantially as described.

In testimony whereof, I my signature, in presence of tWo Witnesses.

BONA ALLEN, JR.

WVitnesses:

W. B. BROGDON, E. VIMBLETON.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C. 

